Initial national data, caching.

Poverty page only so far.
Update hash algorithm to be consistent between runs

Use integer column for faster lookup
Custom city input on poverty
Add loading spinner to poverty
Build - somehow didn't create build on last commit
Fix bug where errors would remain from previous load.

Also, data displayed may have been before complete load (changed on event to after)
Dramatic overhaul of filters

Now, they're facets and use "enums" to define possible selections and values in a generic way.

This breaks everything but poverty page for now.
Preaggregated data on working Poverty page!

Woot! Now getting data and creating query from facets is in a portal class.
Rentburden mostly works with USA and facets
Fix bug where chart would render at wrong size after erro
School to work functional with natl data.

Lots of other things.
Work on schooltowork - thresholds, city selector
Debugging heroku
Specify db port on prod
Remove test printing
Remove test 'in NYC'
New sankey!
New build - somehow missing in last commit
Change order of dropdowns
Exclude build, sublime files from project